Sediments from River Severn in Bristol Channel, United Kingdom

Brown sediments stream from the River Severn, through the Bristol Channel, and into the North Atlantic Ocean. The channel is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England, and extending from the lower estuary of the River Severn to the North Atlantic Ocean.

It takes its name from the English city of Bristol and is over 30 miles (50 km) across at its widest point. At low tide large parts of the channel become mud flats due to the tidal range of 15 metres (49 ft).